Method for determining cqi information, base station, and user equipment

ABSTRACT

A method for determining channel quality indication (CQI) information, implemented by a base station, includes: determining whether intra-device interference occurrence situations of user equipment (UE) in a CQI measurement period and a subsequent downlink (DL) scheduling period of a bandwidth granularity are the same; and in response to the intra-device interference occurrence situations being different, determining a CQI level for subsequent DL scheduling in the bandwidth granularity based on a preset offset.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of International Patent ApplicationNo. PCT/CN2017/100214 filed on Sep. 1, 2017, the content of which isincorporated by reference in its entirety.

TECHNICAL FIELD

The disclosure relates to the technical field of communication, and moreparticularly, to a method for determining channel quality indication(CQI) information, a base station and user equipment (UE).

BACKGROUND

In the early stage of 5th-generation (5G) deployment, non-standalone(NSA) may be adopted, namely long term evolution (LTE) and new radio(NR) networks are simultaneously deployed. An LTE-NR interworking layoutis formed by main signal coverage of a 4th-generation (4G)-network-basedLTE system and strong complement of a 5G-network-based NR system to datatransmission services. At present, 5G NR is mostly centralized in a bandof 3.4 GHz to 4.2 GHz, while a great number of LTE working frequenciesrange from 1.7 GHz to 1.8 GHz, for example, a mainstream frequencydivision duplexing (FDD) band 3. For adaptation to such a networklayout, two types of radio frequency transceiver units working underdifferent network systems are required to be arranged in UE, andconsequently, intra-device interference, including harmonic interferenceand intermodulation interference, may occur in the UE.

For example, in the abovementioned working band, when an LTE radiofrequency transceiver unit and NR radio frequency transceiver unitarranged in the UE simultaneously work, particularly when the LTE radiofrequency transceiver unit performs uplink (UL) transmission by use ofan LTE UL transmission resource and, meanwhile, the NR radio frequencytransceiver unit receives downlink (DL) information by use of a DLtransmission resource of an NR band, a harmonic interference phenomenoneasily occurs. For example, a double-frequency signal of the band 3 isgenerated under the action of a nonlinear device in an LTE transmissionunit, a frequency range of the double-frequency signal is (1.7 GHz˜1.8GHz)×2=3.4 GHz˜3.6 GHz, right in the NR band, and interference isbrought to reception of the DL information of the NR band by the UE.

In addition, when the NR radio frequency transceiver unit and/or the LTEradio frequency transceiver unit simultaneously perform UL transmissionby use of UL transmission resources of at least two different frequencyranges, a combined frequency component is generated under the action ofthe nonlinear device in the transmission unit. If a frequency of thecombined frequency component is close to a frequency of another usefulsignal, for example, a DL signal receiving frequency of a receivingunit, intermodulation interference may be brought to the useful signal,for example, the LTE DL information.

Due to an intra-device interference phenomenon occurring in acommunication process, a base station may not accurately determine,based on CQI information reported by the UE, a modulation and codingscheme for subsequent scheduling of the UE.

SUMMARY

According to a first aspect of the embodiments of the presentdisclosure, a CQI information determination method implemented by a basestation, includes: determining whether intra-device interferenceoccurrence situations of UE in a CQI measurement period and a subsequentDL scheduling period of a bandwidth granularity are the same; and inresponse to the intra-device interference occurrence situations beingdifferent, determining a CQI level for subsequent DL scheduling in thebandwidth granularity based on a preset offset.

According to a second aspect of the embodiments of the presentdisclosure, a method for determining CQI information implemented by UE,includes: receiving CQI modification indication information sent by abase station; based on the CQI modification indication information,modifying measured CQI information of a bandwidth granularity based on apreset offset to obtain a CQI level; and reporting the CQI level to thebase station.

According to a third aspect of the embodiments of the presentdisclosure, a base station includes: a processor; and a memoryconfigured to store instructions executable by the processor, whereinthe processor may be configured to: determine whether intra-deviceinterference occurrence situations of UE in a CQI measurement period anda subsequent DL scheduling period of a bandwidth granularity are thesame; and in response to the intra-device interference occurrencesituations being different, determine a CQI level for subsequent DLscheduling in the bandwidth granularity based on a preset offset.

According to a fourth aspect of the embodiments of the presentdisclosure, UE includes: a processor; and a memory configured to storeinstructions executable by the processor, wherein the processor may beconfigured to: receive CQI modification indication information sent by abase station; based on the CQI modification indication information,modify measured CQI information of a bandwidth granularity based on apreset offset to obtain a CQI level; and report the CQI level to thebase station.

It is to be understood that the above general description and detaileddescription below are only exemplary and explanatory and not intended tolimit the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute apart of this specification, illustrate embodiments consistent with thepresent disclosure and, together with the description, serve to explainthe principles of the present disclosure.

FIG. 1-1 is a schematic diagram illustrating harmonic interferenceaccording to an exemplary embodiment.

FIG. 1-2 is a schematic diagram illustrating intermodulationinterference according to an exemplary embodiment.

FIG. 2 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 3 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 4 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 5 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 6-1 is a schematic diagram illustrating an application scenario ofCQI information determination according to an exemplary embodiment ofthe present disclosure.

FIG. 6-2 is a schematic diagram illustrating an application scenario ofCQI information determination according to an exemplary embodiment ofthe present disclosure.

FIG. 6-3 is a schematic diagram illustrating an application scenario ofCQI information determination according to an exemplary embodiment ofthe present disclosure.

FIG. 6-4 is a schematic diagram illustrating an application scenario ofCQI information determination according to an exemplary embodiment ofthe present disclosure.

FIG. 7 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 8 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 9 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 10 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 11 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 12 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 13 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 14 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 15 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 16 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 17 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 18 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 19 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 20 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 21 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 22 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment of the present disclosure.

FIG. 23 is a schematic diagram illustrating an application scenario ofCQI information determination according to an exemplary embodiment ofthe present disclosure.

FIG. 24 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 25 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 26 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 27 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 28 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 29 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 30 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 31 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 32 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 33 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 34 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 35 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 36 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 37 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 38 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 39 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 40 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 41 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 42 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 43 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 44 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 45 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 46 is a block diagram of a base station according to an exemplaryembodiment of the present disclosure.

FIG. 47 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 48 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 49 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 50 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 51 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 52 is a block diagram of UE according to an exemplary embodiment ofthe present disclosure.

FIG. 53 is a schematic diagram of a base station according to anexemplary embodiment of the present disclosure.

FIG. 54 is a schematic diagram of UE according to an exemplaryembodiment of the present disclosure.

DETAILED DESCRIPTION

Reference will now be made in detail to exemplary embodiments, examplesof which are illustrated in the accompanying drawings. The followingdescription refers to the accompanying drawings in which the samenumbers in different drawings represent the same or similar elementsunless otherwise represented. The implementations set forth in thefollowing description of exemplary embodiments do not represent allimplementations consistent with the present disclosure. Instead, theyare merely examples of apparatuses and methods consistent with aspectsrelated to the present disclosure as recited in the appended claims.

Methods provided in the present disclosure may be performed by a basestation or user equipment (UE), e.g., in a 5G network. The base stationmay be a general base station, a sub-base station, and the like, setwith a massive antenna array. The UE may be a user terminal, a usernode, a mobile terminal, a tablet or the like. In some embodiments, thebase station and the UE are independent, and communicate with each otherto perform the methods provided in the present disclosure together.

In an LTE-NR interworking network distribution stage, a base station maybe required to determine a downlink (DL) channel condition based onchannel quality indication (CQI) information reported by UE and thenconfigure a proper modulation and coding scheme for the UE according tothe DL channel condition.

Intra-device interference may occur in the UE, and consequently, a DLchannel state during measurement of the CQI information by the UE isdifferent from a DL channel state during scheduling of the UE by thebase station, which is directly reflected as follows: the CQIinformation reported to the base station by the UE may not accuratelyrepresent the DL channel state during subsequent scheduling of the UE bythe base station and accuracy of the modulation and coding schemedetermined by the base station for subsequent scheduling is influenced,thereby causing use of an improper data rate for DL data transmission tothe target UE by the base station in an interworking band.

Based on this, the present disclosure provides a method for determiningCQI information. FIG. 2 is a flow chart of a method for determining CQIinformation according to an exemplary embodiment. The method is appliedto a base station and includes the following operations.

At block 11, CQI feedback configuration information of a target UE isdetermined, wherein the CQI feedback configuration information at leastincludes CQI feedback configuration information of an interferencesub-band, and the interference sub-band is a DL frequency range involvedin intra-device interference.

The CQI feedback configuration information of the interference sub-bandis to instruct the target UE to feed back CQI information of theinterference sub-band.

It is to be noted here that, in the present disclosure, when the basestation schedules the target UE in the interference sub-band, theintra-device interference may occur in the target UE or the intra-deviceinterference may also not occur and this is determined according towhether scheduling of the target UE by the base station in another bandin the same period meets an intra-device interference occurrencecondition or not.

FIG. 3 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The operation illustrated in block11 may include the following operations.

At block 111, the interference sub-band involved in the intra-deviceinterference and an interference-free sub-band not involved in theintra-device interference are determined based on radio frequencysupporting capability information of the target UE.

For example, the target UE is UE1. After UE1 initially accesses anetwork, the base station may acquire the radio frequency supportingcapability information of UE1. The radio frequency supporting capabilityinformation of UE1 includes a UL working frequency range and a DLworking frequency range.

The base station determines a first frequency range where interferencemay be generated in the DL working frequency range of UE1 according tothe intra-device interference occurrence condition and determines thedetermined first frequency range as the interference sub-band.

Exemplarily, as illustrated in FIGS. 1-1 and 1-2, it is assumed that UE1supports four working frequency ranges, which include: LTE uplinkworking frequency range and LTE downlink working frequency rangerepresented as LTE UL and LTE DL respectively, and NR uplink workingfrequency range and NR downlink working frequency range represented asNR UL and NR DL respectively. It is also assumed that an LTE radiofrequency transceiver unit adopts an FDD mode and both UL and DL workingbandwidths are 20M, an NR radio frequency transceiver unit adopts a timedivision duplex (TDD) mode and both UL and DL working bandwidths are60M. All working frequency ranges may be illustrated in Table 1.

TABLE 1 Home network Frequency Bandwidth segment identifier range (MHz)LTE UL f11 1,710~1,730 LTE DL f12 1,920~1,940 NR UL f21 3,420~3,480 NRDL f22 3,420~3,480

Table 1 is looked up to obtain that, if LTE UL and NR DL simultaneouslywork, because a double frequency of f11 overlaps 3,420 MHz to 3,460 MHzin f22, namely (1,710-1,730)×2=3,420-3,460 MHz, harmonic interferencemay occur in the UE, as illustrated in FIG. 1-1.

Then, the base station may determine that the first frequency rangewhere the intra-device interference may occur in f22 is 3,420 MHz to3,460 MHz. or called the interference sub-band, and simultaneouslydetermine that a remaining working frequency range 3,460 MHz to 3,480MHz in 122 is an interference-free frequency range and may be called asecond frequency range or the interference-free sub-band in the presentdisclosure.

In the example, how the base station determines the interferencesub-band where the intra-device interference may occur is describedunder the condition that the harmonic interference may occur to thetarget UE. The interference sub-band belongs to a 5G NR band.

Similarly, if LTE UL, NR UL and LTE DL simultaneously work, due to theaction of a nonlinear device, a combined frequency generated between f11and f21 overlaps f12, and consequently, intermodulation interferenceoccurs in the UE, as illustrated in FIG. 1-2. Under such a condition,the base station may also accurately determine the interferencesub-band, for example, 1,920 MHz to 1.930 MHz, in an LTE band, i.e., afrequency range f12. Similarly, a frequency range not involved in theintra-device interference in the frequency range f12 is determined as aninterference-free sub-band, for example, a frequency range of 1,930 MHzto 1,940 MHz.

The interference sub-band may be positioned in a 5G NR DL working bandof the target UE, as illustrated in FIG. 1-1, and may also be positionedin an LTE DL working band of the target UE, as illustrated in FIG. 1-2.

In the embodiment of the present disclosure, a bandwidth range of theinterference sub-band may be any frequency range that is accuratelydescribed and where the intra-device interference may occur. Forexample, it may be a band width part (BWP) in a carrier and may also beaccurate to a subcarrier.

Referring back to FIG. 3, at block 112, the CQI feedback configurationinformation of the target UE is determined based on the interferencesub-band and the interference-free sub-band.

The CQI feedback configuration information may include configurationinformation of a reporting mode and configuration information of areporting granularity.

The reporting mode includes periodic reporting and aperiodic reporting.Configuration information of periodic reporting includes a periodicreporting mode and a period duration. Configuration information ofaperiodic reporting includes an aperiodic reporting mode and triggeringtime of aperiodic reporting.

In the embodiment of the present disclosure, the reporting granularityat least includes the interference sub-band. Based on this, the basestation may also configure another one or more reporting granularities,and at least the following three situations may be included.

A first situation: the reporting granularity includes the interferencesub-band and the interference-free sub-band.

That is, the base station instructs the target UE to simultaneouslyreport, according to a preset CQI reporting mode, CQI information suchas CQI levels determined in the interference sub-band and theinterference-free sub-band.

A second situation: the reporting granularity includes the interferencesub-band and a broadband.

That is, the base station instructs the target UE to report, accordingto a preset CQI reporting mode, a piece of CQI information for the wholesystem bandwidth W0 and simultaneously report a piece of CQI informationfor the interference sub-band.

A third situation: based on the first situation or the second situation,the reporting granularity may further include a sub-band selected by thetarget UE and a sub-band configured at a higher layer.

That is, based on the first situation or the second situation, the basestation may further simultaneously instruct the target UE to report,according to a preset CQI reporting mode, CQI information of thesub-band selected by the UE or CQI information of the sub-bandconfigured at a higher layer.

The content in the CQI configuration information may be illustrated inTable

TABLE 2 Reporting Reporting granularity mode Required Optional PeriodicInterference sub-band, Sub-band selected by UE interference-freesub-band Interference sub-band, Sub-band selected by UE broadbandAperiodic Interference sub-band, Sub-band selected by UE,interference-free sub-band sub-band configured at a higher layerInterference sub-band, Sub-band selected by UE, broadband sub-bandconfigured at a higher layer

In the present disclosure, the base station, when configuring the targetUE to feed back CQI, instructs the target UE to feed back CQI of theinterference sub-band.

At block 12, the CQI feedback configuration information is sent to thetarget UE.

In the embodiment of the present disclosure, the base station maytransmit the CQI feedback configuration information of the target UE tothe target UE through broadcast signaling, higher layer signaling, orphysical layer signaling (for example, physical downlink control channel(PDCCH) signaling). The higher layer signaling may be radio resourcecontrol (RRC) signaling and medium access control (MAC) control element(CE) signaling.

With respect to the amount of control signaling for transmission of theCQI feedback configuration information, if the CQI feedbackconfiguration information of the target UE includes a CQI feedbackgranularity in the related art, namely the reporting granularityincludes the broadband, the sub-band selected by the UE and the sub-bandconfigured at the higher layer, the base station may transmit the CQIconfiguration information of the target UE by use of one or more piecesof control signaling.

In an exemplary embodiment, the CQI feedback configuration informationof the target UE includes the reporting mode (periodic feedback andperiod 1 ms) and the reporting granularity (the broadband and theinterference sub-band).

If the base station adopts one piece of control signaling fortransmission of the CQI feedback configuration information to the targetUE, the control signaling may include periodic feedback, period 1 ms.CQI of the broadband and CQI of the interference sub-band.

That is, in the embodiment of the present disclosure, the base stationmay modify related control signaling, namely adding configurationinformation of the CQI of the interference sub-band into the relatedcontrol signaling, to transmit the CQI feedback configurationinformation to the target UE through one piece of control signaling, sothat the purpose of reducing a signaling overhead may be achieved.

In another embodiment of the present disclosure, the base station maytransmit the CQI configuration information of the target UE to thetarget UE through two or more pieces of control signaling. In the aboveexample, the base station may transmit two pieces of control signaling,where the first signaling includes periodic feedback, period 1 ms andthe CQI of the broadband and the second signaling includes period 1 msand the CQI of the interference sub-band.

In another embodiment of the present disclosure, a reporting period forthe CQI of the interference sub-band may be different from a reportingperiod for the CQI of the broadband and, for example, may be 2 ms.

In the present disclosure, the base station may transmit the CQIconfiguration information to the target UE in a manner of modifying therelated signaling or adding new control signaling to enhance CQIfeedback configuration flexibility.

In an embodiment of the present disclosure, the CQI feedbackconfiguration information of the interference sub-band may furtherinclude frequency range information of the interference sub-band, toensure that the target UE measures and feeds back the CQI information ofthe interference sub-band according to an accurate frequency range andensure feedback accuracy of the CQI of the interference sub-band.

In addition, since both the base station and the UE may accuratelydetermine specific working frequency ranges of the interference sub-bandand the interference-free sub-band according to a UL and DL workingfrequency range supported by the UE, the CQI feedback configurationinformation transmitted to the target UE by the base station may alsonot include specific frequency range information of the interferencesub-band and the interference-free sub-band, to save radio resourcesoccupied by the CQI feedback configuration information, thereby reducingthe signaling overhead.

At block 13, target CQI information for subsequent DL scheduling isdetermined based on CQI information, reported by the target UE based onthe CQI feedback configuration information, of different bandwidthgranularities.

The target UE performs CQI feedback configuration based on the receivedCQI feedback configuration information, acquires CQI information of thedifferent bandwidth granularities according to bandwidth reportinggranularities indicated in the CQI feedback configuration informationand reports the CQI information of the different bandwidth granularitiesto the base station.

The CQI information reported to the base station by the target UE atleast includes the CQI information of the interference sub-band.

In the present disclosure, the CQI information reported to the basestation by the target UE may include one of the following: RSRP of a DLreference signal, RSRQ of the DL reference signal, received signalstrength indicator (RSSI) of the DL reference signal, a CQI level, orthe like.

The RSRP is a power of a cell common reference signal received by theUE, a value of the RSRP being a linear average of powers of resourceelements (REs) in a measurement bandwidth and reflects strength of auseful signal of a present cell.

The RSSI is a linear average of powers of all signals (includingco-frequency useful signal and interference signal, adjacent-frequencyinterference signal, thermal noise and the like) received by the UE andreflects a load intensity on a present resource.

The RSRQ is a ratio of N times of the RSRP to the RSSI, namelyRSRQ=N*RSRP/RSSI, N representing the number of REs in the measurementbandwidth of the RSRP, and it may reflect relative magnitudes of asignal and interference. RE is a minimum time-frequency resource unit ina network system. For example, a RE in an LTE system occupies asubcarrier (15 KHz) in a frequency domain and occupies an orthogonalfrequency division multiplexing (OFDM) symbol ( 1/14 ms) in a timedomain.

A signal to interference plus noise radio (SINR) is a ratio of usefulsignal power to a sum of interference and noise power and directlyreflects quality of a received signal.

The CQI level is configured to quantitatively represent a sequence valueof channel quality, and it is not only related to the SINR of the DLreference signal but also related to hardware performance such asreceiving sensitivity and interference isolation capability of areference signal receiver, i.e., the target UE. For example, in the LTEsystem, channel quality is quantized into sequence values 0 to 15 in aprotocol according to three coding schemes supported by a physicaldownlink shared channel (PDSCH) of LTE, i.e., quadrature phase shiftkeying (QPSK). 16 quadrature amplitude modulation (16QAM) and 64QAM, andis born by 4 bits.

A CQI feedback mode specified in the protocol of the LTE system maycontinue to be used in the 5G NR system. In the embodiment of thepresent disclosure, description is made with the condition that the CQIinformation is the CQI level as an example.

FIG. 4 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. According to different bandwidthgranularities for CQI reporting, the operation illustrated in block 13may include the following operations.

At block 131, target CQI information for subsequent DL scheduling in theinterference sub-band is determined based on CQI information, determinedby the target UE, of the interference sub-band.

At block 132, target CQI information for subsequent DL scheduling in theinterference-free sub-band is determined based on CQI information,determined by the target UE, of another one or more bandwidthgranularities.

The interference-free sub-band is a DL frequency range not involved inthe intra-device interference, and the another one or more bandwidthgranularities include the broadband, the sub-band selected by the UE, orthe sub-band configured at the higher layer.

It is to be noted here that there is no sequence between operationillustrated in block 131 and operation illustrated in block 132 and theymay be executed at the same time.

With respect to the operation illustrated in block 131, FIG. 5 is a flowchart of a method for determining CQI information according to anexemplary embodiment. The operation illustrated in block 131 may includethe following operations.

At block 1311, whether intra-device interference occurrence situationsof the target UE in a CQI measurement period and subsequent DLscheduling period of the interference sub-band are the same isdetermined.

The base station may determine whether the intra-device interference mayoccur to the target UE in the CQI measurement period and the subsequentDL scheduling period or not according to frequency resources allocatedto the target UE and information about UL and DL ratio in different timeranges.

FIG. 6-1 to FIG. 6-4 illustrate four application scenarios. Descriptionis made with Table 1 and FIG. 1-1 as an example. It is assumed that thesystem bandwidth is W0, a frequency range where the intra-deviceinterference may occur, i.e., the interference sub-band, is Wg, and afrequency range where the intra-device interference may not occur, i.e.,the interference-free sub-band, is Wn. The target UE performs CQImeasurement in a time-frequency resource range (T1, Wg) based on the CQIfeedback configuration information transmitted by the base station toobtain CQI information such as a CQI level of a time period T1, and thetarget UE is planned to be scheduled in a time-frequency resource range(T2, Wg) with reference to the CQI level of the time period T1. T1 isthe CQI measurement period of the interference sub-band Wg and, forexample, is a CQI feedback period like 4 ms, and T2 is the subsequent DLscheduling period for the target UE in the interference sub-band Wg andmay be a scheduling period such as 4 ms. That is, the base stationdetermines a modulation and coding scheme for scheduling in next 4 ms byuse of a CQI level fed back by the target UE in previous 4 ms.

If a channel state of the interference sub-band Wg in the time period T1is H1 and the channel state of the interference sub-band Wg in the timeperiod T2 is H2, the following four situations may be included.

A first situation: as illustrated in FIG. 6-1, H1 is the same as H2 andno intra-device interference occurs to the target UE in the interferencesub-band Wg.

A second situation: as illustrated in FIG. 6-2, H1 is the same as H2 andintra-device interference occurs to the target UE in the interferencesub-band Wg.

A third situation: as illustrated in FIG. 6-3, H1 is different from H2,intra-device interference occurs to the target UE in the CQI measurementperiod in the interference sub-band Wg, and no intra-device interferenceoccurs in the subsequent DL scheduling period.

A fourth situation: as illustrated in FIG. 6-4, H1 is different from H2,no intra-device interference occurs to the target UE in the CQImeasurement period, and intra-device interference occurs in thesubsequent DL scheduling period.

If the intra-device interference occurrence situations are the same,i.e., the first situation and the second situation, a modulation andcoding scheme for DL scheduling of the target UE in the subsequentscheduling period T2 is determined according to the CQI level determinedin the time period T1.

Referring back to FIG. 5, at block 1312, in response to the intra-deviceinterference occurrence situations being different, modified CQIinformation is acquired.

For the third situation and the fourth situation, it is apparentlyinaccurate to indicate the modulation and coding scheme for DLtransmission of the target UE in the subsequent scheduling period T2according to the CQI level determined in the time period T1.

Therefore, the base station may be required to modify the CQI level inthe time period T1 according to a preset strategy. For example, for thethird situation, the CQI level is increased according to a presetoffset. For the fourth situation, the CQI level is decreased accordingto a preset offset.

In the embodiment of the present disclosure, the base station mayacquire the modified CQI information to accurately determine themodulation and coding scheme for subsequent DL scheduling according tothe modified CQI information to improve accuracy of the modulation andcoding scheme for subsequent DL scheduling.

In the present disclosure, the modified CQI information may be acquiredin at least the following two manners.

A first acquisition manner: the target UE modifies the CQI informationmeasured based on the DL reference signal in the time-frequency resourcerange (T1, Wg) and then reports the modified CQI information to the basestation.

FIG. 7 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The operations illustrated inblock 1312 may include the following operations.

At block 1312-1, before subsequent DL scheduling is executed, CQImodification indication information is sent to the target UE to instructthe target UE to modify determined original CQI information by use of apreset offset.

In an embodiment of the present disclosure, the CQI modificationindication information sent by the base station may be used to instructthe target UE to modify an original measured value of the DL referencesignal in the time-frequency resource range (T1, Wg).

With respect to a transmission timing of the CQI modification indicationinformation, it may be sent at the beginning of the time period T1 orsent in the time period T1, not later than a starting moment of the timeperiod T2.

With respect to a content of the CQI modification indicationinformation, if the preset offset is preset in the target UE, the CQImodification indication information may be a switching value occupying 1bit. For example, 1 represents that modification is required, and 0represents that modification is not required.

In another embodiment of the present disclosure, if the preset offset isnot pre-stored in the target UE, for example, the target UE accesses thenetwork for the first time, besides modification indication information,the CQI modification indication information may further include thepreset offset. That is, the base station is also required to notify thetarget UE of the preset offset for modifying the CQI information.

The preset offset may be a preset offset applied to all UE and may alsobe a preset offset related to device information of the target UE.

In another embodiment of the present disclosure, the base station mayalso transmit the preset offset to the target UE by use of a piece ofindependent control signaling. The control signaling may be broadcastsignaling, physical-layer signaling, higher-layer signaling and thelike.

At block 1312-2, the modified CQI information reported by the target UEis received.

The target UE, after receiving the CQI modification indicationinformation and determining the preset offset, may modify, based on thepreset offset, the original measured value of the DL reference signal,for example, original measured values of the RSRP and the RSRQ, in thetime-frequency resource range (T1, Wg), or, an original CQI leveldetermined according to the original measured value to obtain a modifiedCQI value and report the modified CQI value to the base station.

In the embodiment of the present disclosure, the base station mayinstruct the target UE through the CQI modification indicationinformation to perform modification from an information source, i.e.,the original measured value of the reference signal, so that CQIinformation modification accuracy may be effectively improved to acquiremore accurate modified CQI information, and subsequent DL schedulingaccuracy may further be improved.

A second acquisition manner: the base station modifies the CQIinformation measured by the target UE in the time-frequency resourcerange (T1, Wg).

FIG. 8 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The operations illustrated inblock 1312 may include the following operations.

At block 1312-3, the original CQI information acquired by the target UEin the CQI measurement period of the interference sub-band is received.

In the embodiment of the present disclosure, for the situationsillustrated in FIG. 6-3 and FIG. 6-4, the base station may normallyreceive the original CQI information, for example, the original CQIlevel, measured by the target UE in the time-frequency resource range(T1, Wg).

At block 1312-4, the original CQI information is modified by use of thepreset offset to obtain the modified CQI information.

In the scenario illustrated in FIG. 6-4, since the base station maypredict that the intra-device interference is about to occur to thetarget UE in the scheduling period T2 according to planned schedulingconfiguration information for the target UE in the time period T2, it isnecessary to modify the presently acquired original CQI information toacquire accurate CQI information for scheduling in the time period T2.

A specific modification manner may be determined according to theoriginal CQI information and a representation form of the preset offset.In the present disclosure, the preset offset may be a modificationoffset of the RSRP, RSRQ and CQI level generated by the intra-deviceinterference in the interference sub-band.

In the embodiment of the present disclosure, the base station mayindependently complete modifying the CQI information to avoidtransmission of various configuration information when instructing theUE for modification, so that the signaling overhead may be reduced, andthe CQI information modification efficiency may be improved.

Referring back to FIG. 5, at block 1313, the target CQI information forsubsequent DL scheduling in the interference sub-band is determinedbased on the modified CQI information.

In a 5G network, reporting form for the target CQI information maydepend on a 5G network protocol. Exemplarily, if a modulation and codingdetermination manner specified in the LTE protocol continues to be usedin the 5G network, namely a modulation and coding scheme is determinedaccording to a quantized CQI level sequence, the target CQI informationshould be a modified CQI level.

Correspondingly, if the modified CQI information determined by the basestation is the modified CQI level, the modified CQI level is the targetCQI information.

If the modified CQI information determined by the base station ismodified RSRP and RSRQ values, the base station is further required toconvert the modified CQI information into the CQI level by use of arelated algorithm to obtain the target CQI information.

The base station, after obtaining the target CQI information, queries amodulation and coding scheme corresponding to the target CQI informationbased on the target CQI information and accurately schedules the targetUE in the time-frequency resource range (T2, Wg) by use of themodulation and coding scheme.

In the present disclosure, a base station of a 5G NR network, whenperforming CQI feedback configuration for UE, may instruct the target UEto report CQI information of an interference sub-band where intra-deviceinterference may occur to the base station for the base station toaccurately determine, based on CQI information of the interferencesub-band, target CQI information for subsequent DL scheduling of thetarget UE to accurately determine a DL channel condition of theinterference sub-band during subsequent DL scheduling based on thetarget CQI information and then configure a proper modulation and codingscheme for the target UE according to the channel condition, so thataccuracy of the modulation and coding scheme for subsequent DLscheduling of the target UE is improved, DL information may further betransmitted to the target UE at an accurate DL transmission rate, andsystem performance is improved.

Description is made in the above embodiments with the condition that thepreset offset is preset in the base station as an example.

In another embodiment of the present disclosure, considering thathardware performance of each UE may be different, intra-deviceinterference influence values, i.e., preset offsets, determined bydifferent UEs based on the same interference sub-band may also bedifferent. For example, for the intra-device interference situationillustrated in FIG. 1-1, if the base station determines that anintra-device interference influence value of the LTE UL frequency rangeof 1,710 MHz to 1,730 MHz for the NR DL frequency range of 3,460 MHz to3,480 MHz is 50 dB, the intra-device interference influence value may bereduced to be 30 dB due to a relatively good interference shieldingeffect of a hardware design of UE1.

In view of influence of hardware of the UE on the intra-deviceinterference influence value, i.e., the preset offset, when the UEinitially accesses the network, the base station may further measure thepreset offset corresponding to the UE and store it as capabilityinformation of the UE.

FIG. 9 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. Based on the embodimentillustrated in FIG. 2, before the operation illustrated in block 11, themethod may further include the following operation.

At block 10, the preset offset corresponding to the target UE isdetermined, wherein the preset offset is an intra-device interferenceinfluence value of the interference sub-band.

In the present disclosure, a determination process of the preset offsetmay include the following situations.

A first situation: the base station instructs the target UE to performCQI measurement on the same interference sub-band for the situationsthat the intra-device interference occurs and no intra-deviceinterference occurs respectively.

FIG. 10 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The operation illustrated in block10 may include the following operations.

At block 101, when the target UE initially accesses a network, offsetmeasurement indication information is sent to the target UE. The offsetmeasurement indication information is to instruct the target UE tomeasure the CQI information in an intra-device interference occurrenceperiod and an intra-device interference-free period in the interferencesub-band respectively.

In an embodiment of the present disclosure, the offset measurementindication information may also be a switching value indicating whetherto perform offset measurement or not, and may further include thefrequency range of the interference sub-band and a measurement resultreporting mode.

Similarly, the base station may load the offset measurement indicationinformation into the higher-layer signaling and the physical-layersignaling for transmission to the target UE.

At block 102, the preset offset corresponding to the target UE isdetermined according to a CQI measurement result obtained by the targetUE.

The target UE, after performing CQI measurement based on the offsetmeasurement indication information, reports the CQI measurement resultto the base station according to a preset measurement result reportingmode to enable the base station to determine the preset offsetcorresponding to the target UE according to the CQI measurement result.

In the present disclosure, according to different CQI measurement resultreporting modes for the target UE, implementation of the operationillustrated in block 102 may also include two manners.

A first manner: the target UE reports an original measured CQI value tothe base station.

FIG. 11 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The operation illustrated in block102 may include the following operations.

At block 1021, first measured CQI information measured by the target UEin the intra-device interference occurrence period in the interferencesub-band is acquired.

For example, in FIG. 6-3, the base station may instruct the target UE tosend original measured values, measured in the time-frequency range (T1,Wg), of all or a preset number of reference signal sampling points tothe base station.

At block 1022, second measured CQI information measured by the target UEin the intra-device interference-free period in the interferencesub-band is acquired.

Similarly, the base station may instruct the target UE to send theoriginal measured value, measured at the same frequency-domain positionin the time-frequency range (T2, Wg), of the reference signal to thebase station.

At block 1023, the preset offset corresponding to the target UE isdetermined according to a difference between the first measured CQIinformation and the second measured CQI information.

A great number of reference signals are laid out in a time-frequencyresource range, which belongs to a symbol-level layout. For example,there are 100 reference signal sampling points, and the first measuredCQI information may be original measured values, for example, RSRPvalues, measured by the target UE when the intra-device interferenceoccurs, of 100 reference signals.

Similarly, the second measured CQI information is original measuredvalues, measured by the target UE when no intra-device interferenceoccurs, of the 100 reference signals.

Since frequency-domain positions of the 100 reference signal samplingpoints are the same, the difference between the first measured CQIinformation and the second measured CQI information may be calculated toaccurately calculate the intra-device interference influence value,i.e., the preset offset, of the target UE.

When the difference between the first measured CQI information and thesecond measured CQI information is calculated, a difference between thetwo original measured values of each sampling point may be calculated toobtain 100 difference values, and then an average value of the 100difference values is calculated; or, average values of the 100 originalmeasured values in the first measured CQI information and the secondmeasured CQI information may be calculated at first respectively, andthen a difference between the two average values is calculated.

The preset offset determined according to the abovementioned method maybe the difference between the original measured values such as the RSRPor RSRQ values, represented as ΔP and ΔQ respectively.

Furthermore, in another embodiment of the present disclosure, the basestation may further calculate, based on the difference between theoriginal measured values, a CQI level offset, which may be representedas ΔC, caused by the intra-device interference according to a relatedalgorithm.

In the embodiment of the present disclosure, the base station mayaccurately calculate the preset offset according to original measuredvalues, measured by the target UE under different situations, ofreference signals, so that calculation resources of the target UE may besaved. Then, the base station may transmit the preset offset of thetarget UE to the target UE through preset control signaling, forexample, the control signaling carrying the CQI modification indicationinformation, to enable the target UE to subsequently modify the CQIinformation by use of the preset offset.

A second manner: the target UE calculates the preset offset according toan original measured value of DL reference signal strength and reportsthe preset offset to the base station.

FIG. 12 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The operation illustrated in block102 may include the following operations.

At block 1024, a CQI measurement result difference sent by the target UEis acquired. The CQI measurement result difference is a differencebetween measurement results obtained by the target UE in theintra-device interference occurrence period and the intra-deviceinterference-free period in the interference sub-band.

In the embodiment of the present disclosure, if the base stationinstructs the target UE to report a difference between two originalmeasured values, the target UE, after measuring the original measuredvalues of the reference signal strength in the intra-device interferenceoccurrence period and the intra-device interference-free periodrespectively, may calculate a difference between the original measuredvalues according to the abovementioned manner.

If the base station instructs the target UE to report a CQI leveldifference, the target UE may further calculate, based on the differencebetween the original measured values, the CQI level difference caused bythe intra-device interference.

The difference between the original measured values and the CQI leveldifference are collectively referred to as the CQI measurement resultdifference, and the CQI measurement result difference is reported to thebase station.

At block 1025, the preset offset corresponding to the target UE isdetermined according to the CQI measurement result difference.

In the same manner as above, the preset offset, determined by the basestation, of the target UE may be ΔP, ΔQ or ΔC.

If the base station expects that the finally determined preset offset isΔC while the target UE sends ΔP or ΔQ in operation illustrated in block1024, the base station may also convert ΔP or ΔQ into ΔC by use of arelated algorithm.

In the embodiment of the present disclosure, if the CQI measurementresult difference value reported by the target UE is the representationform, expected by the base station, of the preset offset, for example,ΔC, the base station is not required to transmit the preset offset tothe target UE, so that the signaling overhead may be reduced.

In another embodiment of the present disclosure, the operationillustrated in block 10 may also be executed before operationillustrated in block 1312-1.

In the embodiment of the present disclosure, the base station mayaccurately determine the intra-device interference influence value inthe target UE according to the reference signal measurement results inintra-device interference occurrence period and intra-deviceinterference-free period, so that the CQI information in theinterference sub-band may be accurately modified, accuracy of schedulingthe target UE by the base station in the interference sub-band mayfurther be improved, accuracy of a system DL transmission rate mayfurther be improved, and the system performance may be improved.

Correspondingly, the present disclosure also provides a method fordetermining CQI information, which is applied to UE. FIG. 13 is a flowchart of a method for determining CQI information according to anexemplary embodiment. The method may include the following operations.

At block 21, CQI feedback configuration information sent by a basestation is received. The CQI feedback configuration information at leastincludes CQI feedback configuration information of an interferencesub-band. The interference sub-band is a DL working frequency rangeinvolved in intra-device interference.

The operation illustrated in block 21 corresponds to the operationillustrated in block 12. In an embodiment of the present disclosure, theCQI feedback configuration information of the interference sub-band mayfurther include frequency range information. The base station mayinstruct the UE to report CQI information of part of a frequency rangeof the interference sub-band.

At block 22, CQI information of different bandwidth granularities isreported to the base station based on the CQI feedback configurationinformation.

The UE, after receiving the CQI feedback configuration information,performs related configuration for CQI feedback, measures the CQIinformation of the different bandwidth granularities based on the CQIfeedback configuration information and then reports the CQI informationof the different bandwidth granularities to the base station accordingto a preset reporting mode such as a periodic feedback or aperiodicfeedback mode.

In the embodiment of the present disclosure, the CQI informationreported to the base station by the UE at least includes CQI informationof the interference sub-band.

An exemplary process that the UE reports the CQI information will bedescribed below in combination with an example and according to thethree situations of the reporting granularity in operation illustratedin block 112.

It is assumed that a system bandwidth is 3,420 MHz to 3,480 MHz, thefrequency range of the interference sub-band being 3,420 MHz to 3,460MHz and a frequency range of an interference-free sub-band being 3,460MHz to 3,480 MHz.

Corresponding to the first situation, the reporting granularity is theinterference sub-band and the interference-free sub-band.

The target UE may measure DL reference signals in the interferencesub-band 3,420 MHz to 3,460 MHz and the interference-free sub-band 3,460MHz to 3,480 MHz to obtain measurement results respectively. Themeasurement result may be an average value calculated according tooriginal measured values of RSRPs or RSRQs of all reference signals.Then, corresponding CQI levels are determined according to themeasurement results, and the CQI levels of the interference sub-band andthe interference-free sub-band are fed back to the base stationrespectively.

Corresponding to the second situation, the reporting granularity is thebroadband and the interference sub-band.

Under such a configuration situation, the target UE may acquire originalmeasured values, for example, RSRP or RSRQ values, of DL referencesignals in the whole system bandwidth 3,420 MHz to 3,480 MHz, calculatean average value of the original measured values of the whole bandwidthand then determine and report a CQI level of the broadband to the basestation.

Similarly, the original measured values of the reference signals in theinterference sub-band 3,420 MHz to 3,460 MHz are selected from theoriginal measured values of the whole system bandwidth, and then the CQIlevel of the interference sub-band is determined and reported to thebase station.

Corresponding to the third situation, the reporting granularity includesthe interference sub-band, the interference-free sub-band or thebroadband and further includes a sub-band selected by the UE and asub-band configured at the higher layer.

Under such a configuration situation, the UE may also select one or moresub-bands from sub-bands in the system bandwidth for CQI informationreporting, or, perform CQI reporting according to the sub-bandconfigured at the higher layer.

In case of division according to the reporting granularity, FIG. 14 is aflow chart of a method for determining CQI information according to anexemplary embodiment. The operation illustrated in block 22 may includethe following operations.

At block 221, CQI information of the interference sub-band is reportedto the base station.

At block 222, CQI information of another one or more bandwidthgranularities is reported to the base station. The another one or morebandwidth granularities include a broadband, a sub-band specified bytarget UE, or a sub-band configured at a higher layer.

In the present disclosure, when reporting the CQI information of theinterference sub-band to the base station, the UE may report obtainedoriginal CQI information to the base station; or, when reporting the CQIinformation of the interference sub-band to the base station, the UE maymodify the original CQI information according to an instruction of thebase station and then report the modified CQI information to the basestation.

FIG. 15 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The operation illustrated in block221 may include the following operations.

At block 2211, before the CQI information of the interference sub-bandis reported, CQI modification indication information transmitted by thebase station is received.

The operation illustrated in block 2211 corresponds to the operationillustrated in block 1312-1 in FIG. 7, and is applied to the applicationscenario illustrated in FIG. 6-3 or FIG. 6-4.

The CQI modification indication information is used to instruct the UEto modify original CQI information of the interference sub-band andreport the modified CQI information to the base station.

At block 2212, based on the CQI modification indication information,original CQI information of the interference sub-band is modified by useof a preset offset to obtain modified CQI information.

In the embodiment of the present disclosure, the original CQIinformation may be an original measured value of reference signalstrength in the interference sub-band or an original CQI leveldetermined according to the original measured value.

The preset offset is an intra-device interference influence valuecorresponding to the interference sub-band in the UE, i.e., a differencebetween reference signal strength measured when there is no intra-deviceinterference and reference signal strength measured when there isintra-device interference in the interference sub-band, or a CQI leveloffset determined according to the difference.

If the preset offset is preset in the UE before the modificationindication information is received, for example, it is transmitted tothe UE by the base station before, the UE, after measuring the originalCQI information of the interference sub-band, may directly determine themodified CQI information based on the preset offset and the original CQIinformation.

In another embodiment of the present disclosure, the base station mayfurther transmit the preset offset corresponding to the intra-deviceinterference to the UE at the same time of transmitting the CQImodification indication information to the UE, which is applied to thecondition that the preset offset is not stored in the UE at present, forexample, the condition that the UE initially accesses a network or theUE accesses the network again after system initialization.

In another embodiment of the present disclosure, for reducing asignaling overhead, the base station may transmit the CQI modificationindication information including the preset offset by use of a piece ofcontrol signaling.

Correspondingly, the UE modifies the measured original CQI informationof the interference sub-band according to the preset offset acquired inreal time to obtain the modified CQI information.

At block 2213, the modified CQI information is reported to the basestation.

FIG. 16 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. Before the operation illustratedin block 2211, the operation illustrated in block 221 may furtherinclude the following operation.

At block 2210, the preset offset for modifying the original CQIinformation of the interference sub-band is acquired.

That is, the UE may acquire the preset offset before it is necessary tomodify the interference sub-band. The preset offset may be an offset ofthe original measured value, for example, RSRP and RSRQ, of thereference signal strength and may also be CQI level offset caused by theintra-device interference.

At block 2210, the following two acquisition manners may be adopted.

A first acquisition manner: the preset offset transmitted by the basestation is received.

The preset offset may be an offset preset by the base station and isapplied to the whole system bandwidth. For example, it is 50 db, tonotify the UE that the difference value of the reference signal strengthmeasured when there is intra-device interference and there is nointra-device interference in the interference sub-band is calculatedaccording to 50 db in a unified manner.

Or, corresponding to the embodiment illustrated in FIG. 11, the presetoffset transmitted by the base station and obtained in block 1023 isreceived.

A second acquisition manner: it is measured by the target UE accordingto measurement indication information of the base station.

FIG. 17 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The operation illustrated in block2210 may include the following operations.

At block 201, offset measurement indication information sent by the basestation is received.

The offset measurement indication information is used to instruct the UEto measure the CQI information in an intra-device interferenceoccurrence period and an intra-device interference-free period in theinterference sub-band.

The operation illustrated in block 201 corresponds to the operationillustrated in block 101 in the embodiment illustrated in FIG. 10.

At block 202, original measured CQI information in an intra-deviceinterference occurrence period and intra-device interference-free periodof the interference sub-band is acquired respectively according to theoffset measurement indication information.

In the embodiment of the present disclosure, the offset measurementindication information includes measurement indication information andmay further include a measurement frequency range, the number ofreference signal sampling points, a number of times of measurement andthe like.

For example, there are 100 reference signal sampling points. The UEmeasures received strength of 100 specified reference signals when theintra-device interference occurs in the interference sub-band to obtainoriginal measured values, for example, RSRP values.

Similarly, the UE measures strength of the 100 reference signals at thesame time-frequency resource positions when no intra-device interferenceoccurs in the interference sub-band to obtain other original measuredvalues.

The original measured values obtained under different situations, of thereference signal strength are collectively referred to as originalmeasured CQI information.

At block 203, the preset offset is obtained based on the originalmeasured CQI information.

In the present disclosure, implementation of the operation illustratedin block 203 also includes two situations.

A first situation: the base station calculates and sends the presetoffset to the UE.

FIG. 18 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The operation illustrated in block203 may include the following operations.

At block 2031, the original measured CQI information measured in theintra-device interference occurrence period and the intra-deviceinterference-free period is sent to the base station respectively suchthat the base station generates the preset offset based on the originalmeasured CQI information.

The operation illustrated in block 2031 corresponds to operationsillustrated in block 1021 and block 1022. The UE sends the originalmeasured values, measured by use of the same sampling granularity in thesame frequency range under different intra-device interferencesituations, of the reference signals to the base station for the basestation to calculate the preset offset according to the originalmeasured CQI values.

At block 2032, the preset offset sent by the base station is received.

In the embodiment of the present disclosure, the UE is only required tomeasure the reference signal strength in the interference sub-band andsend the original measured values to the base station for the basestation to calculate the preset offset. Since calculation of the offsetrequires relatively more memory resources, calculating the offset by thebase station may avoid occupation of memory resources of the UE andfurther reduce influence on service transmission of the UE. In addition,since the base station has more calculation resources than the UE, thepreset offset may be rapidly calculated, and acquisition efficiency ofthe preset offset is improved.

A second situation: the UE calculates the preset offset and notifies itto the base station.

FIG. 19 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The operation illustrated in block203 may include the following operations.

At block 2033, a difference between first measured CQI information andsecond measured CQI information is determined to obtain a measurementresult difference.

The first measured CQI information is original CQI information measuredin the intra-device interference occurrence period in the interferencesub-band. The second measured CQI information is original CQIinformation measured in the intra-device interference-free period in theinterference sub-band.

In the above example, it is assumed that the first measured CQIinformation is RSRP values of 100 reference signal sampling points underthe condition that the intra-device interference occurs and the secondmeasured CQI information is RSRP values of 100 reference signal samplingpoints under the condition that no intra-device interference occurs.

Since frequency-domain positions of the 100 reference signal samplingpoints are the same, the difference between the first measured CQIinformation and the second measured CQI information may be calculated toaccurately calculate the intra-device interference influence value,i.e., the preset offset, of the target UE.

When the difference between the first measured CQI information and thesecond measured CQI information is calculated, a difference between thetwo original measured values of each sampling point may be calculated toobtain 100 difference values, and then an average value of the 100difference values is calculated; or, average values of the 100 originalmeasured values in the first measured CQI information and the secondmeasured CQI information may be calculated at first respectively, andthen a difference between the two average values is calculated to obtainthe measurement result difference.

At block 2034, the preset offset is determined according to themeasurement result difference.

In the embodiment of the present disclosure, the difference between theoriginal measured values, for example, the RSRP or RSRQ values, i.e.,the measurement result difference, may be determined as the presetoffset, represented as ΔP and ΔQ respectively.

In another embodiment of the present disclosure, the UE may furthercalculate, according to the measurement result difference, a CQI leveloffset, which may be represented as ΔC, caused by the intra-deviceinterference according to a related algorithm.

At block 2035, the preset offset is sent to the base station.

In the embodiment of the present disclosure, the UE may calculate thepreset offset according to the original measured values, measured underdifferent intra-device interference situations, of the reference signalstrength in the interference sub-band and store and report the presetoffset to the base station as capability information of the UE. Sincethe base station is not required to transmit the preset offset to theUE, the signaling overhead for transmission of the preset offset to theUE by the base station may be reduced.

Detailed description is made above to the condition that the CQIconfiguration information, determined by the base station, of the targetUE at least includes the CQI feedback information of the interferencesub-band.

If a CQI feedback manner of an LTE system is still adopted in an LTE-NRinterworking network distribution stage, namely the CQI information ofthe interference sub-band is not independently fed back, consideringinfluence of the intra-device interference, the following CQIinformation determination manner may be adopted in the presentdisclosure.

FIG. 20 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. The method is applied to a basestation and may include the following operations.

At block 31, whether intra-device interference occurrence situations ofa target UE in a CQI measurement period and subsequent DL schedulingperiod of a target bandwidth granularity are the same is determined.

In an LTE system, a CQI reporting granularity may be a broadband, asub-band selected by the UE and a sub-band configured at the higherlayer, as illustrated in Table 3.

TABLE 3 Reporting mode Reporting granularity Periodic Broadband,sub-band selected by UPS Aperiodic Broadband, sub-band selected by UE,sub-band configured at the higher layerThe target bandwidth granularity may be any of the abovementionedreporting granularities, and the target bandwidth granularity includes afrequency range involved in intra-device interference.

Implementation of the operation illustrated in block 31 is similar tothat of the operation illustrated in block 1311. The base station maydetermine whether the intra-device interference occurrence situations inthe measurement period and scheduling period of the same bandwidthgranularity are the same or not according to reporting bandwidthgranularity information and subsequent scheduling configurationinformation in CQI feedback configuration information.

At block 32, in response to that the intra-device interferenceoccurrence situations are different, a target CQI level for subsequentDL scheduling in the target bandwidth granularity is determined based onto a preset offset.

The preset offset may be a CQI level offset caused by the intra-deviceinterference and may also be an offset, caused by the intra-deviceinterference, of a measured value, for example, RSRP or RSRQ, of areference signal.

If the preset offset is the CQI level offset caused by the intra-deviceinterference, in the present disclosure, the target UE or the basestation may modify an original CQI level of the measurement periodaccording to the CQI level offset to obtain a target CQI level of thetarget UE in the subsequent DL scheduling period.

A way the base station acquires the target CQI level is described incombination with the application scenarios illustrated in FIG. 6-3 andFIG. 6-4. The base station may modify an original CQI level reported bythe target UE in a period T1 to determine a target CQI level for DLscheduling in a period T2.

If the preset offset is the CQI level offset, for example, 3, and asillustrated in FIG. 6-3, if the reporting granularity is a systembandwidth W0 and the CQI level reported by the target UE in the periodT1 is 5, the base station may determine that the target CQI level for DLscheduling in the period T2 is 5+3=8. That is, the base station, whenscheduling the target UE on the system bandwidth in the period T2,performs DL data transmission to the target UE by use of a modulationand coding scheme corresponding to the CQI level 8 and a correspondingdata rate, so that an output and transmission rate is increased.

For the application scenario illustrated in FIG. 6-4, if the CQI levelreported by the target UE in the period T1 is 8, the base station maydetermine that the target CQI level for DL scheduling in the period T2is 8−3=5. Therefore, the base station, when scheduling the target UE inthe period T2 where a channel condition gets bad, may transmit data at arelatively low rate to ensure data transmission reliability andaccuracy.

In the embodiment of the present disclosure, the base station maydetermine whether the intra-device interference occurrence situations inthe CQI measurement period and subsequent scheduling period of thetarget bandwidth granularity are the same or not according to subsequentscheduling configuration information for the target UE. The frequencyrange of the target bandwidth granularity includes a DL frequency rangeinvolved in the intra-device interference. When the intra-deviceinterference occurrence situations in different periods of the targetbandwidth granularity are different, influence of the intra-deviceinterference on CQI measurement may be modified by use of the presetoffset to accurately determine the target CQI level for subsequentscheduling and further determine a more accurate modulation and codingscheme for subsequent scheduling according to the target CQI level, sothat accuracy in subsequent scheduling of the target UE by the basestation is improved, a DL data rate of the system is reasonablyallocated, and system performance is improved.

In another embodiment of the present disclosure, if the preset offset isthe offset, caused by the intra-device interference, of the originalmeasured value, for example, RSRP or RSRQ, the base station, before thetarget UE reports the CQI level, may be required to instruct the targetUE to modify the CQI level.

FIG. 21 is a flow chart of a method for determining CQI informationaccording to an exemplary embodiment. Operation illustrated in block 32may include the following operations.

At block 321, in response to the intra-device interference occurrencesituations being different, a target frequency range involved inintra-device interference in the target bandwidth granularity isdetermined.

The target bandwidth granularity may be a broadband, a sub-band selectedby the UE, or a sub-band configured at the higher layer.

At block 322, CQI modification indication information is sent to thetarget UE. The CQI modification indication information includes thetarget frequency range.

The CQI modification indication information is used to instruct thetarget UE to modify an original measured value of reference signalstrength in the target bandwidth granularity and then determine the CQIlevel of the target bandwidth granularity.

At block 323, the target CQI level sent by the target UE is received.The target CQI level is a CQI level determined after the target UEmodifies the original measured value of a reference signal in the targetfrequency range based on the preset offset.

In the embodiment of the present disclosure, when the preset offsetdetermined by the base station is an offset of the measured value of thereference signal, under the condition that the base station notifies thepreset offset to the target UE in advance, the base station may send theCQI modification indication information to the target UE to enable thetarget UE to modify the original value, namely performing modificationfrom an information source, according to the preset offset to obtain amore accurate target CQI level after acquiring the original measuredvalue of the reference signal.

In another embodiment of the present disclosure, if the preset offset isnot preset in the target UE, for example, the target UE initiallyaccesses a network or the target UE accesses the network again aftersystem initialization, the base station may further send the presetoffset to the target UE before transmitting the CQI modificationindication information to the target UE or when transmitting the CQImodification indication information to the target UE.

The embodiment is applied to an application scenario that the target UEacquires the preset offset for the first time. According to acharacteristic of a mobile communication network, the base stationnotifies the preset offset to the target UE through control signaling toprepare in advance for subsequent CQI information modification of thetarget UE and improve target CQI information acquisition efficiency.

In another embodiment of the present disclosure, if the base station isintended to acquire the preset offset corresponding to the target UE,when the target UE accesses the network for the first time, for example,it is started for the first time to access the network, the base stationmay also instruct the target UE to perform measurement when theintra-device interference occurs and no intra-device interference occursin a band involved in the intra-device interference respectively tofurther obtain an accurate preset offset corresponding to the target UE.This operation may refer to detailed description in the embodimentillustrated in FIG. 10 and elaborations thereof are omitted herein.

In the embodiment of the present disclosure, considering that differentUEs have different hardware performances and different intra-deviceinterference shielding effects, for obtaining the preset offsetcorresponding to the target UE, the base station may further instructthe target UE to measure reference signal strength of the samefrequency-domain resource under the conditions that the intra-deviceinterference occurs and no intra-device interference occurs respectivelyto accurately determine the preset offset of the target UE according toa measurement result difference, so that accuracy of target CQIinformation is further improved.

Correspondingly, the present disclosure also provides a method fordetermining CQI information, which is applied to UE. FIG. 22 is a flowchart of a method for determining CQI information according to anexemplary embodiment. The method includes the following operations.

At block 41, CQI modification indication information sent by a basestation is received.

The CQI modification indication information is used to instruct thetarget UE to modify measured CQI information of a target bandwidthgranularity for reporting to the base station.

At block 42, based on the CQI modification indication information,measured CQI information of a target bandwidth granularity is modifiedaccording to a preset offset to obtain a target CQI level.

In the same manner as above, if the preset offset is a CQI level offsetcaused by intra-device interference, the target UE may performoffsetting on a determined original CQI level to obtain the target CQIlevel.

In another embodiment of the present disclosure, the CQI modificationindication information may further include target frequency rangeinformation involved in the intra-device interference in the targetbandwidth granularity. If the preset offset is an offset, caused by theintra-device interference, of an original measured value, for example,RSRP or RSRQ,

the target UE, after acquiring an original measured value of referencesignal strength in a target frequency range, performs modificationaccording to the offset of the original measured value, for example, theRSRP or the RSRQ, and determines the target CQI level according to amodified reference signal strength value.

FIG. 23 is a schematic diagram illustrating an application scenario ofCQI information determination according to an exemplary embodiment. Itis assumed that a CQI reporting granularity configured for the target UEby the base station is a sub-band selected by the UE. In this mode, thetarget UE is required to report a CQI of a broadband to the basestation, i.e., a CQI level of a time-frequency resource (W0, T1), and isalso required to report a CQI level of the sub-band selected by the UE.There is made such a hypothesis that the UE selects to report a CQIlevel of a sub-band W3.

Since intra-device interference is about to occur on an interferencesub-band Wg when the base station subsequently schedules the target UE,the base station sends the CQI modification indication information tothe target UE and notifies the UE of the target frequency range wherethe intra-device interference is about to occur.

For example, the target reporting bandwidth granularity is the sub-bandW3 selected by the target UE, and the target UE may determine the targetfrequency range W31 in the sub-band W3. If the preset offset is the RSRPoffset, in a specific process of determining a target CQI level of thesub-band W3, after the target UE measures an original RSRP value of eachDL reference signal in the sub-band W3, in a manner, the original RSRPvalues corresponding to the target frequency range W31 may be modifiedaccording to the RSRP offset, for example, the preset RSRP offset isdeduced from all of them, to obtain modified RSRP values of the targetfrequency range W31, and then the target CQI level is calculated incombination with original RSRP values of a remaining frequency range inW3 and according to a related algorithm.

In another manner, an average value of the original RSRP valuescorresponding to the target frequency range W31 may also be calculated,the average value is modified according to the RSRP offset, and thetarget CQI level of W3 is calculated in combination with an averagevalue of the original RSRP values of the remaining frequency range in W3and according to the related algorithm.

A modification process for the CQI of the broadband is similar andelaborations thereof are omitted herein.

At block 43, the target CQI level is reported to the base station.

The target UE, when reporting the target CQI level, may also report atarget CQI level of the sub-band in a CQI difference value levelreporting manner in the related art to save radio resources.

Correspondingly, in another embodiment of the present disclosure, thetarget UE, before receiving the CQI modification indication informationor when receiving the CQI modification indication information, mayfurther receive the preset offset sent by the base station. This processis like the operation illustrated in block 2210 in the embodimentillustrated in FIG. 16.

In another embodiment of the present disclosure, the target UE may alsoperform measurement when the intra-device interference occurs and nointra-device interference occurs in the interference sub-band accordingto offset measurement indication information transmitted by the basestation respectively, thereby determining the preset offsetcorresponding to the target UE. An exemplary process may refer to thedescription in the embodiments illustrated in FIG. 17 to FIG. 19.

For illustrative purpose, each of the abovementioned method embodimentsis expressed as a combination of a series of operations, but thoseskilled in the art should know that the present disclosure is notlimited to the described operation sequence because some operations maybe executed in other sequences or at the same time according to thepresent disclosure.

Those skilled in the art should also know that all the embodimentsdescribed in the specification are exemplary embodiments.

Corresponding to the above method embodiments, the present disclosurealso provides corresponding device embodiments.

FIG. 24 is a block diagram of a base station according to an exemplaryembodiment. The base station may include a configuration informationdetermination module 51, a sending module 52, and a target CQIdetermination module 53.

The configuration information determination module 51 is configured todetermine CQI feedback configuration information of target UE. The CQIfeedback configuration information at least includes CQI feedbackconfiguration information of an interference sub-band. The interferencesub-band is a DL frequency range involved in intra-device interference;

The sending module 52 is configured to send the CQI feedbackconfiguration information to the target UE.

The target CQI determination module 53 is configured to determine targetCQI information for subsequent DL scheduling based on CQI information,reported by the target UE based on the CQI feedback configurationinformation, of different bandwidth granularities.

FIG. 25 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 24,the configuration information determination module 51 may include asub-band determination submodule 511 and a configuration informationdetermination submodule 512.

The sub-band determination submodule 511 is configured to determine,based on radio frequency supporting capability information of the targetUE, the interference sub-band involved in the intra-device interferenceand an interference-free sub-band not involved in the intra-deviceinterference.

The configuration information determination submodule 512 is configuredto determine the CQI feedback configuration information of the target UEbased on the interference sub-band and the interference-free sub-band.

FIG. 26 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 24,the target CQI determination module 53 may include a first target CQIdetermination submodule 531 and a second target CQI determinationsubmodule 532.

The first target CQI determination submodule 531 is configured todetermine target CQI information for subsequent DL scheduling in theinterference sub-band based on CQI information, determined by the targetUE, of the interference sub-band.

The second target CQI determination submodule 532 is configured todetermine target CQI information for subsequent DL scheduling in theinterference-free sub-band based on CQI information, determined by thetarget UE, of another one or more bandwidth granularities.

The interference-free sub-band is a DL frequency range not involved inthe intra-device interference and the another one or more bandwidthgranularities include a broadband, a sub-band specified by the targetUE, or a sub-band configured at the higher layer.

FIG. 27 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 26,the first target CQI determination submodule 531 may include aninterference situation determination unit 5311, a CQI modification unit5312 and a target CQI determination unit 5313.

The interference situation determination unit 5311 is configured todetermine whether intra-device interference occurrence situations of thetarget UE in a CQI measurement period and subsequent DL schedulingperiod of the interference sub-band are the same or not.

The CQI modification unit 5312 is configured to, in response to that theintra-device interference occurrence situations are different, acquiremodified CQI information.

The target CQI determination unit 5313 is configured to determine, basedon the modified CQI information, the target CQI information forsubsequent DL scheduling in the interference sub-band.

FIG. 28 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 27,the CQI modification unit 5312 may include a modification indicationsending subunit 5312-1 and a modified information receiving subunit5312-2.

The modification indication sending subunit 5312-1 is configured to,before subsequent DL scheduling is executed, send CQI modificationindication information to the target UE to instruct the target UE tomodify determined original CQI information by use of a preset offset.

The CQI modification indication information in another embodiment of thepresent disclosure further includes the preset offset for modifying theoriginal CQI information.

The modified information receiving subunit 5312-2 is configured toreceive the modified CQI information reported by the target UE.

FIG. 29 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 27,the CQI modification unit 5312 may include an original informationreceiving subunit 5312-3 and a CQI modification subunit 5312-4.

The original information receiving subunit 5312-3 is configured toreceive the original CQI information obtained by the target UE in theCQI measurement period of the interference sub-band.

The CQI modification subunit 5312-4 is configured to modify the originalCQI information by use of the preset offset to obtain the modified CQIinformation.

FIG. 30 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 24,the base station may further include an offset determination module 50.

The offset determination module 50 is configured to determine a presetoffset corresponding to the target UE. The preset offset is anintra-device interference influence value of the interference sub-band.

FIG. 31 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 30,the offset determination module 50 may include a measurement indicationsending submodule 501 and an offset determination submodule 502.

The measurement indication sending submodule 501 is configured to, whenthe target UE initially accesses a network, send offset measurementindication information to the target UE. The offset measurementindication information is used to instruct the target UE to measure theCQI information in an intra-device interference occurrence period and anintra-device interference-free period in the interference sub-bandrespectively.

The offset determination submodule 502 is configured to determine thepreset offset corresponding to the target UE according to a CQImeasurement result obtained by the target UE.

FIG. 32 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 31,the offset determination submodule 502 may include a first measuredinformation acquisition unit 5021, a second measured informationacquisition unit 5022 and a first offset determination unit 5023.

The first measured information acquisition unit 5021 is configured toacquire first measured CQI information measured by the target UE in theintra-device interference occurrence period in the interferencesub-band.

The second measured information acquisition unit 5022 is configured toacquire second measured CQI information measured by the target UE in theintra-device interference-free period in the interference sub-band.

The first offset determination unit 5023 is configured to determine thepreset offset corresponding to the target UE according to a differencebetween the first measured CQI information and the second measured CQIinformation.

FIG. 33 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 31,the offset determination submodule 502 may include a measurementdifference acquisition unit 5024 and a second offset determination unit5025.

The measurement difference acquisition unit 5024 is configured toacquire a CQI measurement result difference sent by the target UE. TheCQI measurement result difference is a difference between measurementresults obtained by the target UE in the intra-device interferenceoccurrence period and the intra-device interference-free period in theinterference sub-band.

The second offset determination unit 5025 is configured to determine thepreset offset of the target UE according to the CQI measurement resultdifference.

The preset offset includes one of the following: an RSRP offset, an RSRQoffset, or a CQI level offset.

Correspondingly, the present disclosure also provides UE. FIG. 34 is ablock diagram of UE according to an exemplary embodiment. The UE mayinclude a configuration information receiving module 61 and a CQIreporting module 62.

The configuration information receiving module 61 is configured toreceive CQI feedback configuration information sent by a base station.The CQI feedback configuration information at least includes CQIfeedback configuration information of an interference sub-band. Theinterference sub-band is a DL working frequency range involved inintra-device interference.

The CQI reporting module 62 is configured to report CQI information ofdifferent bandwidth granularities to the base station based on the CQIfeedback configuration information.

FIG. 35 is a block diagram of UE according to an exemplary embodiment.Based on the UE embodiment illustrated in FIG. 34, the CQI reportingmodule 62 may include a first CQI reporting submodule 621 and a secondCQI reporting submodule 622.

The first CQI reporting submodule 621 is configured to report CQIinformation of the interference sub-band to the base station.

The second CQI reporting submodule 622 is configured to report CQIinformation of another one or more bandwidth granularities to the basestation. The another one or more bandwidth granularities include abroadband, a sub-band specified by target UE, or a sub-band configuredat the higher layer.

FIG. 36 is a block diagram of UE according to an exemplary embodiment.Based on the UE embodiment illustrated in FIG. 35, the first CQIreporting submodule 621 may include a modification indication receivingunit 6211, a modification unit 6212 and a modified information reportingunit 6213.

The modification indication receiving unit 6211 is configured to, beforethe CQI information of the interference sub-band is reported, receiveCQI modification indication information transmitted by the base station.

The CQI modification indication information in another embodiment of thepresent disclosure further includes the preset offset corresponding tothe intra-device interference.

The modification unit 6212 is configured to modify, based on the CQImodification indication information, original CQI information of theinterference sub-band by use of a preset offset to obtain modified CQIinformation.

The modified information reporting unit 6213 is configured to report themodified CQI information to the base station.

FIG. 37 is a block diagram of UE according to an exemplary embodiment.Based on the UE embodiment illustrated in FIG. 34, the UE may furtherinclude an offset acquisition module 60.

The offset acquisition module 60 is configured to acquire the presetoffset for modifying the original CQI information of the interferencesub-band.

FIG. 38 is a block diagram of UE according to an exemplary embodiment.Based on the UE embodiment illustrated in FIG. 37, the offsetacquisition module 60 may include a measurement indication receivingsubmodule 601, a measurement submodule 602 and an offset acquisitionsubmodule 603.

The measurement indication receiving submodule 601 is configured toreceive offset measurement indication information sent by the basestation.

The measurement submodule 602 is configured to acquire, based on theoffset measurement indication information, original measured CQIinformation in an intra-device interference occurrence period andintra-device interference-free period of the interference sub-bandrespectively.

The offset acquisition submodule 603 is configured to obtain the presetoffset based on the original measured CQI information.

FIG. 39 is a block diagram of UE according to an exemplary embodiment.Based on the UE embodiment illustrated in FIG. 38, the offsetacquisition submodule 603 may include an original information sendingunit 6031 and an offset receiving unit 6032.

The original information sending unit 6031 is configured to send theoriginal measured CQI information measured in the intra-deviceinterference occurrence period and the intra-device interference-freeperiod to the base station respectively to enable the base station togenerate the preset offset based on the original measured CQIinformation.

The offset receiving unit 6032 is configured to receive the presetoffset sent by the base station.

FIG. 40 is a block diagram of UE according to an exemplary embodiment.Based on the UE embodiment illustrated in FIG. 38, the offsetacquisition submodule 603 may include a measurement differenceacquisition unit 6033, an offset determination unit 6034 and an offsetsending unit 6035.

The measurement difference acquisition unit 6033 is configured todetermine a difference between first measured CQI information and secondmeasured CQI information to obtain a measurement result difference. Thefirst measured CQI information is the original CQI information measuredin the intra-device interference occurrence period in the interferencesub-band and the second measured CQI information is the original CQIinformation measured in the intra-device interference-free period in theinterference sub-band.

The measurement result difference in the embodiment of the presentdisclosure may include any one of: an RSRP difference, an RSRQdifference, or a CQI level difference.

The offset determination unit 6034 is configured to determine the presetoffset according to the measurement result difference.

The offset sending unit 6035 is configured to send the preset offset tothe base station.

According to another aspect, corresponding to the CQI informationdetermination method embodiments illustrated in FIG. 20 and thefollowing figures, the present disclosure also provides anotherembodiment of an application function realization device and acorresponding terminal.

FIG. 41 is a block diagram of a base station according to an exemplaryembodiment. The base station may include an interference situationdetermination module 71 and a target CQI determination module 72.

The interference situation determination unit 71 is configured todetermine whether intra-device interference occurrence situations of atarget UE in a CQI measurement period and subsequent DL schedulingperiod of a target bandwidth granularity are the same or not.

The target bandwidth granularity may be a bandwidth granularity involvedin a CQI feedback mode specified in a CQI feedback protocol in an LTEsystem.

For example, in a broadband CQI mode, the target bandwidth granularityis the whole system bandwidth. In a mode of sub-band selection by UE,the target bandwidth granularity may be the broadband and one or moresub-bands selected by the UE. In a mode of sub-band configuration at thehigher layer, the target bandwidth granularity may be the broadband andall sub-bands configured at the higher layer. The target bandwidthgranularity includes a frequency range involved in intra-deviceinterference, namely the target bandwidth granularity may include all aninterference sub-band or part of the interference sub-band. Theinterference sub-band is a frequency range that may be influenced by theintra-device interference in a DL working frequency range supported bythe UE.

The target CQI determination module 72 is configured to, in response tothat the intra-device interference occurrence situations are different,determine, based on a preset offset, a target CQI level for subsequentDL scheduling in the target bandwidth granularity.

FIG. 42 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 41,the target CQI determination module 72 may include a target frequencydetermination submodule 721, a modification indication sending submodule722 and a target CQI level receiving submodule 723.

The target frequency determination submodule 721 is configured to, inresponse to that the intra-device interference occurrence situations aredifferent, determine a target frequency range involved in intra-deviceinterference in the target bandwidth granularity.

As illustrated in FIG. 23, if the target bandwidth granularity is asub-band corresponding to a frequency range W3, a frequency range W31 inthe figure is the target frequency range involved in the intra-deviceinterference.

The modification indication sending submodule 722 is configured to sendCQI modification indication information to the target UE. The CQImodification indication information includes the target frequency range.

Still in the above example, the base station, before receiving a CQIlevel, reported by the target UE, of the sub-band W3, may send themodification indication information to the target UE to indicate thatthe target UE is required to modify an original measured value, measuredin a time-frequency resource (T1, W3), of a reference signal andindicate that only an original measured value, corresponding to thetarget frequency range W31, of a reference signal is required to bemodified.

In another embodiment of base station in the present disclosure, the CQImodification indication information may further include the presetoffset for modifying influence of the intra-device interference. Thepreset offset is configured to modify original CQI information of thetarget frequency range.

The target CQI level receiving submodule 723 is configured to receivethe target CQI level sent by the target UE. The target CQI level is aCQI level determined after the target UE modifies an original measuredvalue of a reference signal in the target frequency range by use of thepreset offset.

FIG. 43 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 41,the base station may further include an offset determination module 70,an interference situation determination module 71 and a target CQIdetermination module 72.

The offset determination module 70 is configured to determine the presetoffset corresponding to the target UE. The preset offset is anintra-device interference influence value of an interference sub-band.The interference sub-band is a DL frequency range involved in theintra-device interference.

FIG. 44 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 43,the offset determination module 70 may include a measurement indicationsending submodule 701 and an offset determination submodule 702.

The measurement indication sending submodule 701 is configured to, whenthe target UE initially accesses a network, send offset measurementindication information to the target UE. The offset measurementindication information is configured to instruct the target UE tomeasure CQI information in an intra-device interference occurrenceperiod and an intra-device interference-free period in the interferencesub-band respectively.

The offset determination submodule 702 is configured to determine thepreset offset corresponding to the target UE according to a CQImeasurement result obtained by the target UE.

In the embodiment of the present disclosure, the preset offset mayinclude any one of the following: an RSRP offset, an RSRQ offset, or aCQI level offset.

FIG. 45 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 44,the offset determination submodule 702 may include a first measuredinformation acquisition unit 7021, a second measured informationacquisition unit 7022, and a first offset determination unit 7023.

The first measured information acquisition unit 7021 is configured toacquire first measured CQI information measured by the target UE in theintra-device interference occurrence period in the interferencesub-band.

The second measured information acquisition unit 7022 is configured toacquire second measured CQI information measured by the target UE in theintra-device interference-free period in the interference sub-band.

The first offset determination unit 7023 is configured to determine thepreset offset corresponding to the target UE according to a differencebetween the first measured CQI information and the second measured CQIinformation.

In the present disclosure, the base station embodiment illustrated inFIG. 45 is similar to the base station embodiment illustrated in FIG.32.

FIG. 46 is a block diagram of a base station according to an exemplaryembodiment. Based on the base station embodiment illustrated in FIG. 44,the offset determination submodule 702 may include a measurementdifference acquisition unit 7024 and a second offset determination unit7025.

The measurement difference acquisition unit 7024 is configured toacquire a CQI measurement result difference sent by the target UE. TheCQI measurement result difference is a difference between measurementresults obtained by the target UE in the intra-device interferenceoccurrence period and the intra-device interference-free period in theinterference sub-band.

The second offset determination unit 7025 is configured to determine thepreset offset of the target UE according to the CQI measurement resultdifference.

In the present disclosure, the base station embodiment illustrated inFIG. 46 is similar to the base station embodiment illustrated in FIG.33.

Corresponding to the CQI information determination method embodimentapplied to the UE in FIG. 22 and the following figures, the presentdisclosure also correspondingly provides UE.

FIG. 47 is a block diagram of UE according to an exemplary embodiment.The UE may include a modification indication receiving module 81, amodification module 82 and a target CQI level reporting module 83.

The modification indication receiving module 81 is configured to receiveCQI modification indication information sent by a base station.

The modification module 82 is configured to modify, based on the CQImodification indication information, measured CQI information of atarget bandwidth granularity according to a preset offset to obtain atarget CQI level.

A target CQI level reporting module 83 is configured to report thetarget CQI level to the base station.

In the present disclosure, the UE embodiment illustrated in FIG. 47 issimilar to the UE embodiment illustrated in FIG. 36.

In another embodiment of the present disclosure, the CQI modificationindication information received by the modification indication receivingmodule 81 may include a target frequency range involved in intra-deviceinterference in the target bandwidth granularity. Correspondingly, FIG.48 is a block diagram of UE according to an exemplary embodiment. Basedon the UE embodiment illustrated in FIG. 47, the modification module 82may include an original measurement submodule 821, a modificationsubmodule 822 and a target CQI level determination submodule 823.

The original measurement submodule 821 is configured to acquire anoriginal measured value of a reference signal in the target frequencyrange.

The modification submodule 822 is configured to modify the originalmeasured value of the reference signal according to a preset offset toobtain modified reference signal strength in the target frequency range.

The target CQI level determination submodule 823 is configured todetermine a CQI level of the target bandwidth granularity according tothe modified reference signal strength of the target frequency range.

FIG. 49 is a block diagram of UE according to an exemplary embodiment.Based on the UE embodiment illustrated in FIG. 47, the UE may furtherinclude an offset acquisition module 80.

The offset acquisition module 80 is configured to acquire the presetoffset for modifying influence of the intra-device interference.

FIG. 50 is a block diagram of UE according to an exemplary embodiment.Based on the UE embodiment illustrated in FIG. 49, the offsetacquisition module 80 may include a measurement indication receivingsubmodule 801, a measurement submodule 802 and an offset acquisitionsubmodule 803.

The measurement indication receiving submodule 801 is configured toreceive offset measurement indication information sent by the basestation.

The measurement submodule 802 is configured to acquire, based on theoffset measurement indication information, original measured CQIinformation in an intra-device interference occurrence period andintra-device interference-free period of an interference sub-bandrespectively. The interference sub-band is a DL frequency range involvedin the intra-device interference.

The offset acquisition submodule 803 is configured to obtain the presetoffset according to the original measured CQI information.

FIG. 51 is a block diagram of UE according to an exemplary embodiment.Based on the UE embodiment illustrated in FIG. 50, the offsetacquisition submodule 803 may include an original information sendingunit 8031 and an offset receiving unit 8032.

The original information sending unit 8031 is configured to send theoriginal measured CQI information measured in the intra-deviceinterference occurrence period and intra-device interference-free periodof the interference sub-band to the base station respectively to enablethe base station to generate the preset offset according to the originalmeasured CQI information.

The offset receiving unit 8032 is configured to receive the presetoffset sent by the base station.

In the present disclosure, the UE embodiment illustrated in FIG. 51 issimilar to the UE embodiment illustrated in FIG. 39.

FIG. 52 is a block diagram of UE according to an exemplary embodiment.Based on the UE embodiment illustrated in FIG. 50, the offsetacquisition submodule 803 may include a measurement differenceacquisition unit 8033, an offset determination unit 8034 and an offsetsending unit 8035.

The measurement difference acquisition unit 8033 is configured todetermine a difference between first measured CQI information and secondmeasured CQI information to obtain a measurement result difference. Thefirst measured CQI information is the original CQI information measuredin the intra-device interference occurrence period in the interferencesub-band and the second measured CQI information is the original CQIinformation measured in the intra-device interference-free period in theinterference sub-band.

The measurement result difference may include one of the following: anRSRP difference, an RSRQ difference, or a CQI level difference.

The offset determination unit 8034 is configured to determine the presetoffset according to the measurement result difference.

The offset sending unit 8035 is configured to send the preset offset tothe base station.

In the present disclosure, the UE embodiment illustrated in FIG. 52 issimilar to the UE embodiment illustrated in FIG. 40.

The device embodiments substantially correspond to the methodembodiments, and thus, for related parts, reference may be made todescription of the method embodiments. The device embodiments describedabove are only exemplary, modules and units described as separate partstherein may or may not be physically separated, and parts displayed asmodules and units may be located in the same place or may also bedistributed to multiple networks. Part or all of the modules therein maybe selected according to a practical requirement to achieve the purposeof the solutions of the present disclosure.

In an exemplary embodiment, a base station includes: a processor; and amemory configured to store instructions executable for the processor,wherein the processor is configured to: determine CQI feedbackconfiguration information of target UE, wherein the CQI feedbackconfiguration information at least includes CQI feedback configurationinformation of an interference sub-band, and the interference sub-bandis a DL frequency range involved in intra-device interference; send theCQI feedback configuration information to the target UE; and determinetarget CQI information for subsequent DL scheduling based on CQIinformation, reported by the target UE based on the CQI feedbackconfiguration information, of different bandwidth granularities.

In an exemplary embodiment, a base station includes: a processor; and amemory configured to store instructions executable for the processor,wherein the processor is configured to: determine whether intra-deviceinterference occurrence situations of target UE in a CQI measurementperiod and subsequent DL scheduling period of a target bandwidthgranularity are the same or not; and in response to the intra-deviceinterference occurrence situations being different, determine, based ona preset offset, a target CQI level for subsequent DL scheduling in thetarget bandwidth granularity.

In an exemplary embodiment, UE includes: a processor; and a memoryconfigured to store instructions executable for the processor, whereinthe processor is configured to: receive CQI feedback configurationinformation sent by a base station, where the CQI feedback configurationinformation at least includes CQI feedback configuration information ofan interference sub-band and the interference sub-band is a DL workingfrequency range involved in intra-device interference; and report CQIinformation of different bandwidth granularities to the base stationaccording to the CQI feedback configuration information.

In an exemplary embodiment, UE includes: a processor; and a memoryconfigured to store instructions executable for the processor, whereinthe processor is configured to: receive CQI modification indicationinformation sent by a base station; modify, based on the CQImodification indication, measured CQI information of a target bandwidthgranularity according to a preset offset to obtain a target CQI level;and report the target CQI level to the base station.

FIG. 53 is a schematic diagram of a base station 5300 according to anexemplary embodiment. Referring to FIG. 53, the base station 5300includes a processing component 5322, a wireless transmission/receivingcomponent 5324, an antenna component 5326 and a wirelessinterface-specific signal processing part. The processing component 5322may further include one or more processors.

In an exemplary embodiment, a processor in the processing component 5322may be configured to: determine CQI feedback configuration informationof target UE, wherein the CQI feedback configuration information atleast includes CQI feedback configuration information of an interferencesub-band and the interference sub-band is a DL frequency range involvedin intra-device interference; send the CQI feedback configurationinformation to the target UE; and determine target CQI information forsubsequent DL scheduling based on CQI information, reported by thetarget UE based on the CQI feedback configuration information, ofdifferent bandwidth granularities.

In an exemplary embodiment, a processor in the processing component 5322may be configured to: determine whether intra-device interferenceoccurrence situations of target UE in a CQI measurement period andsubsequent DL scheduling period of a target bandwidth granularity arethe same or not; and in response to the intra-device interferenceoccurrence situations being different, determine, based on a presetoffset, a target CQI level for subsequent DL scheduling in the targetbandwidth granularity.

In an exemplary embodiment, there is also provided a non-transitorycomputer-readable storage medium including instructions that, whenexecuted by the processing component 5322 of the base station 5300,cause the base station 5300 to implement the CQI informationdetermination method illustrated in any one of FIGS. 2-12 or the CQIinformation determination method illustrated in any one of FIG. 20 andFIG. 21. For example, the non-transitory computer-readable storagemedium may be a read-only memory (ROM), a random-access memory (RAM), acompact disc read-only memory (CD-ROM), a magnetic tape, a floppy disc,an optical data storage device and the like.

FIG. 54 is a schematic diagram of UE 5400 according to an exemplaryembodiment. For example, the UE 5400 may be a terminal, such as a mobilephone, a computer, a digital broadcast terminal, a messaging device, agaming console, a tablet, a medical device, exercise equipment, apersonal digital assistant and a wearable device such as a smart watch,smart glasses, a smart band and smart running shoes.

Referring to FIG. 54, the UE 5400 may include one or more of thefollowing components: a processing component 5402, a memory 5404, apower component 5406, a multimedia component 5408, an audio component5410, an input/output (I/O) interface 5412, a sensor component 5414, anda communication component 5416.

The processing component 5402 typically controls overall operations ofthe UE 5400, such as the operations associated with display, telephonecalls, data communications, camera operations, and recording operations.The processing component 5402 may include one or more processors 5420 toexecute instructions to perform all or part of the operations in theabovementioned method. Moreover, the processing component 5402 mayinclude one or more modules which facilitate interaction between theprocessing component 5402 and the other components. For instance, theprocessing component 5402 may include a multimedia module to facilitateinteraction between the multimedia component 5408 and the processingcomponent 5402.

The memory 5404 is configured to store various types of data to supportthe operation of the UE 5400. Examples of such data include instructionsfor any application programs or methods operated on the UE 5400, contactdata, phonebook data, messages, pictures, video, etc. The memory 5404may be implemented by any type of volatile or non-volatile memorydevices, or a combination thereof, such as a static random access memory(SRAM), an electrically erasable programmable read-only memory (EEPROM),an erasable programmable read-only memory (EPROM), a programmableread-only memory (PROM), a ROM, a magnetic memory, a flash memory, and amagnetic or optical disk.

The power component 5406 provides power for various components of the UE5400. The power component 5406 may include a power management system,one or more power supplies, and other components associated withgeneration, management and distribution of power for the UE 5400.

The multimedia component 5408 includes a screen providing an outputinterface between the UE 5400 and a user. In some embodiments, thescreen may include a liquid crystal display (LCD) and a touch panel(TP). If the screen includes the TP, the screen may be implemented as atouch screen to receive an input signal from the user. The TP includesone or more touch sensors to sense touches, swipes and gestures on theTP. The touch sensors may not only sense a boundary of a touch or swipeaction but also detect a duration and pressure associated with the touchor swipe action. In some embodiments, the multimedia component 5408includes a front camera and/or a rear camera. The front camera and/orthe rear camera may receive external multimedia data when the device5400 is in an operation mode, such as a photographing mode or a videomode. Each of the front camera and the rear camera may be a fixedoptical lens system or have focusing and optical zooming capabilities.

The audio component 5410 is configured to output and/or input an audiosignal. For example, the audio component 5410 includes a microphone(MIC), and the MIC is configured to receive an external audio signalwhen the UE 5400 is in the operation mode, such as a call mode, arecording mode and a voice recognition mode. The received audio signalmay further be stored in the memory 5404 or sent through thecommunication component 5416. In some embodiments, the audio component5410 further includes a speaker configured to output the audio signal.

The I/O interface 5412 provides an interface between the processingcomponent 5402 and a peripheral interface module, and the peripheralinterface module may be a keyboard, a click wheel, a button and thelike. The button may include, but not limited to: a home button, avolume button, a starting button and a locking button.

The sensor component 5414 includes one or more sensors configured toprovide status assessment in various aspects for the UE 5400. Forinstance, the sensor component 5414 may detect an on/off status of theUE 5400 and relative positioning of components, such as a display andsmall keyboard of the UE 5400, and the sensor component 5414 may furtherdetect a change in a position of the UE 5400 or a component of the UE5400, presence or absence of contact between the user and the device5400, orientation or acceleration/deceleration of the UE 5400 and achange in temperature of the UE 5400. The sensor component 5414 mayinclude a proximity sensor configured to detect presence of an objectnearby without any physical contact. The sensor component 5414 may alsoinclude a light sensor, such as a complementary metal oxidesemiconductor (CMOS) or charge coupled device (CCD) image sensor,configured for use in an imaging application. In some embodiments, thesensor component 5414 may also include an acceleration sensor, agyroscope sensor, a magnetic sensor, a pressure sensor or a temperaturesensor.

The communication component 5416 is configured to facilitate wired orwireless communication between the UE 5400 and another device. The UE5400 may access a communication-standard-based wireless network, such asa wireless fidelity (Wi-Fi) network, a 4th-Generation (5G) or5th-Generation (5G) network or a combination thereof. In an exemplaryembodiment, the communication component 5416 receives a broadcast signalor broadcast associated information from an external broadcastmanagement system through a broadcast channel. In an exemplaryembodiment, the communication component 5416 further includes a nearfield communication (NFC) module to facilitate short-rangecommunication. In an exemplary embodiment, the communication component5416 may be implemented based on a radio frequency identification (RFID)technology, an infrared data association (IrDA) technology, anultra-wideband (UWB) technology, a Bluetooth (BT) technology and anothertechnology.

In an exemplary embodiment, the UE 5400 may be implemented by one ormore application specific integrated circuits (ASICs), digital signalprocessors (DSPs), digital signal processing devices (DSPDs),programmable logic devices (PLDs), field programmable gate arrays(FPGAs), controllers, micro-controllers, microprocessors or otherelectronic components, and is configured to execute the abovementionedmethod.

In an exemplary embodiment, there is also provided a non-transitorycomputer-readable storage medium including instructions, such as thememory 5404 including instructions, and the instructions may be executedby the processor 5420 of the UE 5400 to implement the CQI informationdetermination method illustrated in any one of FIG. 13 to FIG. 19 or theCQI information determination method illustrate in FIG. 22. For example,the non-transitory computer-readable storage medium may be a ROM, a RAM,a CD-ROM, a magnetic tape, a floppy disc, an optical data storage deviceand the like.

Other implementation solutions of the present disclosure will beapparent to those skilled in the art from consideration of thespecification and practice of the present disclosure. This applicationis intended to cover any variations, uses, or adaptations of the presentdisclosure following the general principles thereof and including suchdepartures from the present disclosure as come within known or customarypractice in the art. It is intended that the specification and examplesbe considered as exemplary only, with a true scope and spirit of thepresent disclosure being indicated by the following claims.

It will be appreciated that the present disclosure is not limited to theexact construction that has been described above and illustrated in theaccompanying drawings, and that various modifications and changes may bemade without departing from the scope thereof. It is intended that thescope of the present disclosure only be limited by the appended claims.

What is claimed is:
 1. A method for determining channel quality indication (CQI) information, implemented by a base station, the method comprising: determining whether intra-device interference occurrence situations of user equipment (UE) in a CQI measurement period and a subsequent downlink (DL) scheduling period of a bandwidth granularity are the same; and in response to the intra-device interference occurrence situations being different, determining a CQI level for subsequent DL scheduling in the bandwidth granularity based on a preset offset.
 2. The method of claim 1, wherein in response to the intra-device interference occurrence situations being different, determining the CQI level for subsequent DL scheduling in the bandwidth granularity based on the preset offset comprises: in response to the intra-device interference occurrence situations being different, determining a frequency range involved in intra-device interference in the bandwidth granularity; sending CQI modification indication information to the UE, wherein the CQI modification indication information comprises the frequency range; and receiving the CQI level from the UE, wherein the CQI level is a CQI level determined after the UE modifies an original measured value of a reference signal in the frequency range based on the preset offset.
 3. The method of claim 2, wherein the CQI modification indication information further comprises the preset offset for modifying influence of the intra-device interference.
 4. The method of claim 1, further comprising: determining the preset offset corresponding to the UE, wherein the preset offset is an intra-device interference influence value of an interference sub-band and the interference sub-band is a DL frequency range involved in the intra-device interference.
 5. The method of claim 4, wherein determining the preset offset corresponding to the UE comprises: when the UE initially accesses a network, sending offset measurement indication information to the UE, wherein the offset measurement indication information is to instruct the UE to measure CQI information in an intra-device interference occurrence period and an intra-device interference-free period in the interference sub-band respectively; and determining the preset offset corresponding to the UE according to a CQI measurement result obtained by the UE.
 6. The method of claim 5, wherein determining the preset offset corresponding to the UE according to the CQI measurement result obtained by the UE comprises performing one of: acquiring first measured CQI information measured by the UE in the intra-device interference occurrence period in the interference sub-band; acquiring second measured CQI information measured by the UE in the intra-device interference-free period in the interference sub-band; and determining the preset offset corresponding to the UE according to a difference between the first measured CQI information and the second measured CQI information, or acquiring a CQI measurement result difference from the UE, wherein the CQI measurement result difference is a difference between measurement results obtained by the UE in the intra-device interference occurrence period and the intra-device interference-free period in the interference sub-band; and determining the preset offset corresponding to the UE according to the CQI measurement result difference.
 7. The method of claim 4, wherein the preset offset comprises one of: a reference signal received power (RSRP) offset, a received signal reference quality (RSRQ) offset, or a CQI level offset.
 8. A method for determining channel quality indication (CQI) information, implemented by user equipment (UE), the method comprising: receiving CQI modification indication information from a base station; based on the CQI modification indication information, modifying measured CQI information of a bandwidth granularity based on a preset offset to obtain a CQI level; and reporting the CQI level to the base station.
 9. The method of claim 8, wherein the CQI modification indication information comprises a frequency range involved in intra-device interference in the bandwidth granularity, and based on the CQI modification indication information, modifying the measured CQI information of the bandwidth granularity based on the preset offset to obtain the CQI level comprises: acquiring an original measured value of a reference signal in the frequency range; modifying the original measured value of the reference signal based on the preset offset to obtain modified reference signal strength in the frequency range; and determining the CQI level of the bandwidth granularity according to the modified reference signal strength in the frequency range.
 10. The method of claim 8, further comprising: before receiving the CQI modification indication information from the base station, acquiring the preset offset for modifying influence of the intra-device interference.
 11. The method of claim 10, wherein acquiring the preset offset for modifying the influence of the intra-device interference comprises: receiving offset measurement indication information from the base station; acquiring original measured CQI information in an intra-device interference occurrence period and an intra-device interference-free period of an interference sub-band based on the offset measurement indication information respectively, wherein the interference sub-band is a downlink (DL) frequency range involved in the intra-device interference; and obtaining the preset offset based on the original measured CQI information.
 12. The method of claim 11, wherein obtaining the preset offset based on the original measured CQI information comprises one of: sending the original measured CQI information measured in the intra-device interference occurrence period and the intra-device interference-free period of the interference sub-band to the base station such that the base station generates the preset offset based on the original measured CQI information; and receiving the preset offset from the base station; or determining a difference between first measured CQI information and second measured CQI information to obtain a measurement result difference, wherein the first measured CQI information is the original CQI information measured in the intra-device interference occurrence period in the interference sub-band and the second measured CQI information is the original CQI information measured in the intra-device interference-free period in the interference sub-band; determining the preset offset according to the measurement result difference; and sending the preset offset to the base station.
 13. The method of claim 12, wherein the measurement result difference comprises one of: a reference signal received power (RSRP) difference, a reference signal received quality (RSRQ) difference, or a CQI level difference.
 14. A base station, comprising: a processor; and a memory configured to store instructions executable by the processor, wherein the processor is configured to: determine whether intra-device interference occurrence situations of user equipment (UE) in a channel quality indication (CQI) measurement period and a subsequent downlink (DL) scheduling period of a bandwidth granularity are the same; and in response to the intra-device interference occurrence situations being different, determine a CQI level for subsequent DL scheduling in the bandwidth granularity based on a preset offset.
 15. The base station of claim 14, wherein the processor is further configured to: in response to the intra-device interference occurrence situations being different, determine a frequency range involved in intra-device interference in the bandwidth granularity; send CQI modification indication information to the UE, where the CQI modification indication information comprises the frequency range; and receive the CQI level from the UE, wherein the CQI level is a CQI level determined after the UE modifies an original measured value of a reference signal in the frequency range based on the preset offset.
 16. The base station of claim 14, wherein the processor is further configured to: determine the preset offset corresponding to the UE, wherein the preset offset is an intra-device interference influence value of an interference sub-band and the interference sub-band is a DL frequency range involved in the intra-device interference.
 17. The base station of claim 16, wherein the processor is further configured to: when the UE initially accesses a network, send offset measurement indication information to the UE, wherein the offset measurement indication information is configured to instruct the UE to measure CQI information in an intra-device interference occurrence period and an intra-device interference-free period in the interference sub-band respectively; and determine the preset offset corresponding to the UE according to a CQI measurement result obtained by the UE.
 18. User equipment (UE), comprising: a processor; and a memory configured to store instructions executable for the processor, wherein the processor is configured to: receive channel quality indication (CQI) modification indication information from a base station; based on the CQI modification indication information, modify measured CQI information of a bandwidth granularity based on a preset offset to obtain a CQI level; and report the CQI level to the base station.
 19. The UE of claim 18, wherein the CQI modification indication information comprises a frequency range involved in intra-device interference in the bandwidth granularity, and the processor is further configured to: acquire an original measured value of a reference signal in the frequency range; modify the original measured value of the reference signal based on the preset offset to obtain modified reference signal strength in the frequency range; and determine the CQI level of the bandwidth granularity according to the modified reference signal strength in the frequency range.
 20. The UE of claim 18, wherein the processor is further configured to: acquire the preset offset for modifying influence of the intra-device interference. 